title: Drift-diffusion kinetics of a confined colloid.
abstract: The drift-diffusion equation on a finite interval with reflecting boundary conditions is solved by Laplace transformation. The Green function is obtained as a series in powers of e(-hu/D), where u is the drift velocity, D the diffusion coefficient and h the width of the interval. In the drift-dominated regime hu/D >> 1, the first terms provide an exact solution in the limit of short and long times, and a good approximation in the intermediate regime. As a possible application, we discuss confined colloidal suspensions subjected to an external field.
authors.affiliation: CPMOH, Université Bordeaux 1 & CNRS, Talence, France.
authors.forename: Yves
authors.initials: Y
authors.lastname: Leroyer
authors.forename: Alois
authors.initials: A
authors.lastname: Würger
mesh_terms: D000465:Algorithms; D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D004058:Diffusion; D008956:Models, Chemical
chemical_list: D003102:Colloids